{
  "name": "Notify Invoice Emails in Slack",
  "nodes": [
    {
      "name": "Check for new emails",
      "type": "n8n-nodes-base.emailReadImap",
      "position": [
        500,
        300
      ],
      "parameters": {
        "format": "resolved",
        "mailbox": "Inbox",
        "options": {}
      },
      "typeVersion": 1,
      "id": "notify-invoice-emails-in-slack-0"
    },
    {
      "name": "If email body contains invoice",
      "type": "n8n-nodes-base.if",
      "position": [
        700,
        300
      ],
      "parameters": {
        "conditions": {
          "string": [
            {
              "value1": "={{$json[\"text\"].toLowerCase()}}",
              "value2": "invoice",
              "operation": "contains"
            }
          ]
        },
        "combineOperation": "any"
      },
      "typeVersion": 1,
      "id": "notify-invoice-emails-in-slack-1"
    },
    {
      "name": "Select invoice attachment",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "if(!$binary?.attachment_0)throw Error(\"Invoice attachment missing\"); return {json:$json,binary:$binary};"
      },
      "id": "notify-invoice-emails-in-slack-2"
    },
    {
      "name": "Submit the receipt to Mindee",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "POST",
        "url": "https://api-v2.mindee.net/v2/products/extraction/enqueue",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "sendBody": true,
        "contentType": "multipart-form-data",
        "bodyParameters": {
          "parameters": [
            {
              "name": "model_id",
              "value": "YOUR_MINDEE_MODEL_ID"
            },
            {
              "name": "file",
              "parameterType": "formBinaryData",
              "inputDataFieldName": "attachment_0"
            }
          ]
        },
        "options": {}
      },
      "id": "notify-invoice-emails-in-slack-3"
    },
    {
      "name": "Validate the receipt job",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "if(!/^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i.test($json.job?.id || \"\"))throw Error(\"Mindee returned an invalid job ID\"); return {json:{jobId:$json.job.id}};"
      },
      "id": "notify-invoice-emails-in-slack-4"
    },
    {
      "name": "Wait for receipt processing",
      "type": "n8n-nodes-base.wait",
      "typeVersion": 1.1,
      "parameters": {
        "amount": 3,
        "unit": "seconds"
      },
      "id": "notify-invoice-emails-in-slack-5"
    },
    {
      "name": "Check the receipt job",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "GET",
        "url": "={{ \"https://api-v2.mindee.net/v2/jobs/\" + $(\"Validate the receipt job\").first().json.jobId + \"?redirect=false\" }}",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "options": {}
      },
      "id": "notify-invoice-emails-in-slack-6"
    },
    {
      "name": "Check the job status",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "const job=$json.job; const expected=$(\"Validate the receipt job\").first().json.jobId; if(!job || job.id!==expected || job.status===\"Failed\" || (job.status===\"Processing\" && $runIndex>=199)) throw Error(\"Mindee job failed or timed out\"); if(job.status!==\"Processing\" && job.status!==\"Processed\") throw Error(\"Invalid Mindee status\"); if(job.status===\"Processed\" && !/^https:\\/\\/api-v2\\.mindee\\.net\\/v2\\/products\\/extraction\\/results\\/[0-9a-f-]{36}$/i.test(job.result_url||\"\"))throw Error(\"Invalid result URL\"); return {json:{ready:job.status===\"Processed\",resultUrl:job.result_url}};"
      },
      "id": "notify-invoice-emails-in-slack-7"
    },
    {
      "name": "Is the receipt ready?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "typeValidation": "strict",
            "version": 2
          },
          "conditions": [
            {
              "id": "ready",
              "leftValue": "={{ $json.ready }}",
              "rightValue": true,
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "id": "notify-invoice-emails-in-slack-8"
    },
    {
      "name": "Read the receipt result",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "parameters": {
        "method": "GET",
        "url": "={{ $json.resultUrl }}",
        "authentication": "genericCredentialType",
        "genericAuthType": "httpHeaderAuth",
        "options": {}
      },
      "id": "notify-invoice-emails-in-slack-9"
    },
    {
      "name": "Prepare invoice notification",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "parameters": {
        "mode": "runOnceForEachItem",
        "jsCode": "const amount=$json?.inference?.result?.fields?.total_amount?.value; if($json?.inference?.job?.id!==$(\"Validate the receipt job\").item.json.jobId || typeof amount!==\"number\" || !Number.isFinite(amount))throw Error(\"Invalid invoice total\"); const email=$(\"Check for new emails\").item; return {json:{amount},binary:email.binary};"
      },
      "id": "notify-invoice-emails-in-slack-10"
    },
    {
      "name": "If Amount > 1000",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "typeValidation": "strict",
            "version": 2
          },
          "conditions": [
            {
              "id": "amount",
              "leftValue": "={{ $json.amount }}",
              "rightValue": 1000,
              "operator": {
                "type": "number",
                "operation": "gt"
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "id": "notify-invoice-emails-in-slack-11"
    },
    {
      "name": "Send email to finance manager",
      "type": "n8n-nodes-base.emailSend",
      "position": [
        1340,
        120
      ],
      "parameters": {
        "text": "Hi,\n\nThere is a new high value invoice to be paid that you may need to approve.\n\n~ n8n workflow",
        "options": {},
        "subject": "New high value invoice",
        "toEmail": "finance@example.com",
        "fromEmail": "workflow@example.com",
        "attachments": "attachment_0"
      },
      "typeVersion": 1,
      "id": "notify-invoice-emails-in-slack-12"
    },
    {
      "name": "Send new invoice notification",
      "type": "n8n-nodes-base.slack",
      "position": [
        1580,
        300
      ],
      "parameters": {
        "text": ":new: There is a new invoice to pay :new:",
        "channel": "YOUR_SLACK_CHANNEL_ID",
        "blocksUi": {
          "blocksValues": []
        },
        "attachments": [
          {
            "color": "#FFBF00",
            "fields": {
              "item": [
                {
                  "short": true,
                  "title": "Amount",
                  "value": "={{ $(\"Prepare invoice notification\").item.json.amount }}"
                },
                {
                  "short": false,
                  "title": "From",
                  "value": "={{ $(\"Check for new emails\").item.json.from.value[0].address }}"
                },
                {
                  "short": true,
                  "title": "Subject",
                  "value": "={{ $(\"Check for new emails\").item.json.subject }}"
                }
              ]
            },
            "footer": "=*Date:* {{ $(\"Check for new emails\").item.json.date }}"
          }
        ],
        "otherOptions": {}
      },
      "typeVersion": 1,
      "id": "notify-invoice-emails-in-slack-13"
    }
  ],
  "active": false,
  "settings": {},
  "connections": {
    "Check for new emails": {
      "main": [
        [
          {
            "node": "If email body contains invoice",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Select invoice attachment": {
      "main": [
        [
          {
            "node": "Submit the receipt to Mindee",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Submit the receipt to Mindee": {
      "main": [
        [
          {
            "node": "Validate the receipt job",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Validate the receipt job": {
      "main": [
        [
          {
            "node": "Wait for receipt processing",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Wait for receipt processing": {
      "main": [
        [
          {
            "node": "Check the receipt job",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check the receipt job": {
      "main": [
        [
          {
            "node": "Check the job status",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check the job status": {
      "main": [
        [
          {
            "node": "Is the receipt ready?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read the receipt result": {
      "main": [
        [
          {
            "node": "Prepare invoice notification",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Prepare invoice notification": {
      "main": [
        [
          {
            "node": "If Amount > 1000",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Send email to finance manager": {
      "main": [
        [
          {
            "node": "Send new invoice notification",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "If email body contains invoice": {
      "main": [
        [
          {
            "node": "Select invoice attachment",
            "type": "main",
            "index": 0
          }
        ],
        []
      ]
    },
    "Is the receipt ready?": {
      "main": [
        [
          {
            "node": "Read the receipt result",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Wait for receipt processing",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "If Amount > 1000": {
      "main": [
        [
          {
            "node": "Send email to finance manager",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "Send new invoice notification",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "pinData": {}
}